Browse DORAS
Browse Theses
Latest Additions
Creative Commons License
Except where otherwise noted, content on this site is licensed for use under a:

Characterization of frequency drift of sampled-grating DBR laser module under direct modulation

Anandarajah, Prince M. and Maher, Robert D. and Barry, Liam P. and Kaszubowska-Anandarajah, Aleksandra and Connolly, Eoin M. and Farrell, Tom and McDonald, David (2008) Characterization of frequency drift of sampled-grating DBR laser module under direct modulation. IEEE Photonics Technology Letters, 20 (2). pp. 72-74. ISSN 1041-1135

Full text available as:

PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader


The authors demonstrate the drift in frequency of a static sampled-grating distributed Bragg reflector (SG DBR) laser module when it is subjected to direct modulation. The magnitude of drift and its settling time is characterized as a function of the index of modulation. Results show that when the directly modulated SG DBR is optically filtered, as in a dense wavelength- division- multiplexed system, a power penalty of 6.7 dB is incurred in comparison to the unfiltered case.

Item Type:Article (Published)
Uncontrolled Keywords:Dense wavelength-division multiplexing (DWDM); direct intensity modulation; laser stability; optical fiber communications; tunable lasers (TLs);
Subjects:Engineering > Optical communication
Physical Sciences > Lasers
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Research Initiatives and Centres > Research Institute for Networks and Communications Engineering (RINCE)
Publisher:Institute of Electrical and Electronics Engineers
Official URL:
Copyright Information:Copyright © 2008 IEEE. Reprinted from IEEE Photonics Technology Letters.This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the Dublin City University's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
ID Code:187
Deposited On:28 Jan 2008 by DORAS Administrator. Last Modified 20 Feb 2017 16:45

Download statistics

Archive Staff Only: edit this record